Brand HSP Model 70111 Quantity 1 Piece(s)/pack Color Black Material plastic Compatible device Brand New HSP Powerstarter (rotostart) Suits Nitro Motors For HSP Tyrannosaurus Atomic Warhead Bazooka Tornado; Windhobby Behemoth Sidewinder Nitro Vehicles! This power starter is used to replace your pull start simply remove your pull starter and attach the included rear motor plate to your motor attach the power starter and press the power button. No more pull starting or broken pull starters! Powered by 540 size electric motor (included) and 7.2V rechargeable battery (not included). Please check the details below for motor compatibility. This auction includes the backing plate to suit VX-16 VX-18 or VX-21 nitro motors and more (please see the list below) please let us know what motor you have when you purchase one of our powerstarters and we will send the correct plate to suit your motor. Functions Deceleration Ratio : 1:3.7; Net Weight : 308.6g; Powered By : 7.2V Rechargeable Battery Pack (not included); Suits Motors : VX-15cxp VX-16cxp VX-18cxp VX-21 etc (the motors found in Atomic Warhead Tyrannosaurus Beast Buggy VH-X5 Beast Lamborghini VH-A6 etc); Packing List 1 x HSP Power Starter 1 x Drill holder 4 x Screws 1 x Turning Stick(about 15cm) 1 x English Instruction manual