and durable Made of high quality metal. the splined interlocks with 17mm splined wheels. Perfect style and exquisite workmanship. With screws.Easy to install and durable for long time use. Part Number:5353X part Name:17MM HEX Wheel Replacement part for these models: New Style: 1/10 E- (3908) 1/10 - 2.5 (4910) 1/10 3.3 (5308) 1/10 3.3 (5309) 1/10 Summit (5607) 1/10 E- (5608) Style: 1/10 E- EVX2 (3903) 1/10 - 3.3 (4907) 1/10 - 3.3 (4908) 1/10 - 3.3 (4909) 1/10 E- EVX2 (5603) 1/10 E- EVX2 (5605) 1/10 Slayer Pro (5907) colour:dark blue material:Aluminum alloy size:17mm Package Contents: 4 * Combination set Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.