Material: Iron + Steel; Bearing Color: Ti Color; Load Capacity: 512 kg; Inner Diameter: 12 mm; Outer Diameter: 50 mm; Thickness: 13 mm; Groove Width: 10 mm; Groove Depth: 7.5 mm; Radian: R = 3 mm; Size: 50 x 13 mm / 1.97 x 0.51 inch (OD x T); Weight: 99 g. Features: Outer diameter is 50 mm, inner diameter is 12 mm, groove width is 10 mm, groove depth is 7.5 mm, load capacity is 512 kg. Constructed primarily from iron with a stainless steel center bearing for smooth rolling performance. Application: Suitable for wire rope wheels, transmission equipment, and industrial pulleys. Note: Inline bearings are not removable. Package includes: 1 x Pulley. Each unit has a unique MPN label on the inner packaging, verifying it has passed quality inspection and is an original product from our store. Please provide this information if you require assistance.