Door Stop 타입 = Bumper Door Stop Material = Rubber 색상 = Black Diameter = 20mm The Bosch Rexroth cylindrical bump stop or bumper creates a buffer for swinging or sliding doors to reduce noise and prevent damage.Can be used with either 8mm or 10mm T-slots order the appropriate M6 T-nut or T-block Hardness: 55 Shore: A