D1525 Features: -Roller. -Housing height: 1.25". -Material: Steel ball bearing. -Edge type: Concave. -1.5" Steel ball bearing roller with adjustable steel housing assembly. -Number of wheels: 1. -Housing style: K-Tab. Specifications: -Housing width: 0.88" at dimples. -Housing length: 2.25". -Dimensions: 6.44" H x 1.13" W x 3.81" D.