These light-duty plastic casters are on swiveling stems and have dual 1-1/2" dia x 5/16" wheels in 1-7/8" x 1-3/16" hemispheric housings. Stems are striated steel, 3/8" dia x 3/4" long. We're thinking these would be fine for your average chair. Our each is a bag of (4).

The ball casters are great swivelers and quite snazzy looking, too. Seen on your better chairs everywhere. These are brass plated on 1-1/2" square mounting plates with 3/16" holes at the corners. 2-1/2" dia.

You’re on a roll. You’ve been on a roll for years and you know it. Keep it going with this set of (6) 5/8" dia steel ball casters on 2" x 1-3/8" plates with 5/32" mounting holes. Rated for a max load of 35 lbs, and come on, you’ve got a million things under 35 lbs that need rolling.

Never seemed fair to nail the "lazy" tag so permanently on the "Susans" but that probably has no "bearing" on the issue. Also called turntable bearings, they are the square or circular flat ball bearing devices YOU bolt between two flat objects to achieve rotation. Like that spinning center section of a Chinese restaurant table. We had these in surplus once and they were quite popular. To our chagrin, we discovered they could be bought commercially for the same price. So we did. The 4" version is rated for a 300lb. load and the 12" (round) for 1000lbs.

Shepherd oil resistant rubber Viper scooter wheel. 2-1/2" diameter x 7/8" wide with a 1/4" id hub. Max load per wheel is 80 lbs. Weighs in at 1/2 lbs.

10" Diameter x 3" wide pneumatic steel rimmed wheel. Size is 4.10/3.50 with a knobby thread, 5/8" bore and each handles loads uptp 300 lbs. 30psi and weighs in at 3lbs.

This rope hoist has drop-forged, zinc-plated eye-hooks and claims to be rated for a 2,000-lb working load, but we think that's a misprint. Great for easily hoisting lumber and pails of gravel, but leave your grand piano on the first floor, or hire the professionals. The eye-hooks are 2" x 1-3/8" x 1/4" ID, and the nylon triple pulleys provide a 7:1 lift ratio. Includes (65) feet of 1/4” dia nylon rope.

A nice pulley just ready to be combined into the block and tackle you need for tiny jobs, like trimming your bonsai trees or hauling your model boat out of the pond. Get this block with (1) sheave and rig up whatever you need. Each block has an aluminum frame about 3–1/2” long with “S” hooks on each end. The sheaves, or wheels are about 2” dia x 1/4” wide, with a “V” groove that looks perfect to handle 1/8” or smaller Venetian blind cord. These dudes are perfect for demonstrating mechanical advantage in the physics lab!! But not for heavy lifting.

Good-bye backaches. Save your sacroiliac with a 3-wheeled professional mover's dolly. It measures 6-3/8" wide between a trio of swivel casters with 1-9/16" x 11/16" wheels, and has a drop-down center and a 1/2" dia hole for permanent attachment to frequently moved items. Steel construction, 110 lb max load (so not piano-duty), and rubber pads above each wheel. Stands 2-1/2" tall. We think ordering (4) would be a good place to start.

These pillow block bearings have 13-gauge steel mounting straps, 4" long x 1-1/8" with 5/16" x 5/8" mounting slots, and a sintered iron ball unit measuring 1-11/16" dia with either a 5/8” ID or 1” ID brass sleeve. The 5/8” ID one has an oil cup on the top; the 1” dia version has a grease fitting in the same place.

This 32-tooth gear is 1-1/16" dia, 32 pitch and 20-degree pressure angle. Measures 3/32" thick on its face with a 1/4" bore and a 15/32" dia x 17/32" long 13-tooth shaft with the same pitch/pressure

Plastic utility wheel. 3-1/2" diameter x 1-1-4" wide and a 5/16" hub. Ribbed tread. Weighs in at 1/2 lbs.

These translucent silicone O-rings are 3/32" thick and measure 4" dia. Nice belts for science-project motors and even nicer for our slingshot needs. Crafters will see jewelry material that the metal-detectors won't care about.

These translucent silicone O-rings are 1/8" thick and measure 3-1/2" dia. Nice belts for science-project motors and even nicer for your slingshot needs. Crafters will see jewelry material that the metal-detectors won't care about.

No? Good, because we’ve got these plastic gear sets ready for you. You pick. The (20) piece pinion set includes gears from 4mm to 19mm, all meshing, and all with 1.9mm ID bores for 2mm shafts. In 0.5 modulus and very close to 48 pitch. The (7) piece set is 16 pitch with a 20-degree pressure angle, and you’ll get red and blue gears from 3/4” to 2-1/2”, again all meshing. They’re 1/4” thick with a 3/16” bore, and come with a 1-1/2” handle to crank the hub on any gear.

Rubber tread wheel 7-3/4" x 2" wide cross tread. 1/2" id hub. weighing in at 3 lbs.

Little black plastic gear, 1-1/32" dia x 3/32" thick with (34) teeth, 32-pitch with a 14-1/2 degree pressure angle and a 3/8" long, 11/32" 9-tooth shaft, same pitch, with the teeth on the outer half. Has (3) equidistant 3/16" bores in the face, and a 5/32" bore on the shaft side, 3/32" on the face side.

This small 24-tooth pulley is 1-1/16" long with 5/16" of that being a 5/8" dia shaft with a 1/2" x 3/8" flattened bore. The pulley portion is 1" OD x 7/8" ID. In shiny silver aluminum.