PlusRoc Self-Adhesive Swivel Caster Wheels for Small Kitchen Appliances, 8 Rollers with Nylon Balls

Eight low-profile ball rollers that stick to the underside of a coffee maker, blender or air fryer so it can be slid forward for use and pushed back under the cupboard afterwards. Each roller swivels freely, and the nylon ball runs quieter than a bare steel bearing.

• What arrives: eight rollers, eight adhesive pads and sixteen screws, so you can glue them on or fix them down.
• Roller size: 19 mm tall (about 3/4 in) on a 42 mm mounting plate; hole spacing is 36 mm and each hole takes a 4 mm screw.
• Rated load: PlusRoc rates each roller at 14 lb. Note that the listing's own totals do not quite add up, quoting 55 lb across four rollers and 110 lb across eight where the per-roller figure would give 56 lb and 112 lb. Treat the rating as approximate.
• Surface: the adhesive needs a hard, smooth underside, and the bond wants a day to cure before anything heavy goes on. Rough or porous bases are unsuitable.
• Materials: nylon balls seated in ABS housings, which reduces marking on the counter.