20 x door pulley wheel:10 x a +10 x bHigh Quality, Use Iron + Nylon materialUsed compatible with Sliding door , cabinet furniture etcHole to hole: 44mm (1.73 inch)Wheel Thickness: 5mm (0.20 inch)Glass sliding door roller clamp steel wheel pulley track compatible with bathroom door shop door, showcase, wine cabinet, etc.Made of stainless steel, Nirvana coated surface, durable in use.Size: Approx 56x8mm (2.20 x 0.31 inch)Model : Wardrobe Sliding Door RollerDoor window single roller pulley wheelDesigned with a nylon roller and bracketEasy and convenient to useAn perfect accessory compatible with your door, drawer or windowsFull length: approx 60mmFull width: approx 23mmFull thickness: approx 6.5mmSlot width: approx 5mmSlot depth: approx 15mmThickness of glass: 5mm(refers to the thickness that the slot can be clamped)Material: stainless steel/Iron + NylonItem color: silverIncluded in the Package:20 x door pulley wheelOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.