Ball roller (ball transfer unit), 25.4 mm, with mounting holes in base plate, Ball-transfer-units.com
Prime-Line 1-1/2 in. Stainless Steel Ball Bearing Sliding Door Tandem Roller Assembly D 1922 - The Home Depot
Scriveiner Classic Stainless Steel Rollerball Pen
Amazon.com: Stainless Steel Roller Balls & Lids for Standard 5, 10, 15, and 30 ml essential oil vials. (Leak-proof, and fits on your oil bottle) Pack of 6 rollers & 6 lids.
Stainless Steel Roller Balls for Vials | Berlin Packaging
Schneiders FES Stainless Steel Roller Ball English Spurs | Schneiders
16 PCS 1 Inch Roller Ball Transfer Bearing, Flange Mounted Carbon Steel Round Ball Transfer Unit, Universal Rotation Ball Casters for Conveyor, Roller Stand, Transmission, Load Capacity 400 lbs: Amazon.com: Industrial & Scientific
Amazon.com: 12 Stainless Steel Roller Ball Roll On Inserts for Essential Oil Bottles 5ml and 15ml Amber doTERRA and Young Living Bottles : Beauty & Personal Care
Amazon.com: Vivaplex, 24, Clear, 10 ml Glass Roll-on Bottles with Stainless Steel Roller Balls. 3-3 ml Droppers included : Beauty & Personal Care
Utopia Alley Double Roller Ball Shower Curtain Rings for Bathroom, Rust Resistant Stainless Steel in Brushed Nickel HK16BN - The Home Depot
Amazon.com: STAINLESS STEEL Roller Ball/Roll On Inserts for 5ml and 15ml Amber doTERRA and Young Living Bottles (8) : Beauty & Personal Care