MODEL NUMBER - Drive Socket Kit - 891. & STRONG - The package is made from premium supplies and assessments were performed for lengthy lasting use. You needn't worry about replacing it frequently, saving your time and the upkeep cost. COMPATIBLITY - socket couples the motor to the blade meeting and protects the motor if the blade meeting is blocked from rotating. This alternative pressure socket kit isn't always for use with the XL. EASY TO INSTALL - It will take you about 10 minutes to exchange the hot power socket kit. DIY installation, packed with accomplishment. size:Approximately four in diameter Material:plastic colour:black Package Contents: 1 x Drive Socket 1 x Hex wrench Only the above kit content, other merchandise shouldn't included. Note: Light and various displays could cause the color of the item in the picture a little bit diverse from the real thing. The size allowed error is +/- 1-3cm.