Specification AgeRangeDescription : Kid Brand : GPM BulletPoint : Made by Pit Bull Tires; Pit Bull Tires is a China based company; parts are sourced from Global producers BulletPoint1 : Product Name : Aluminum Pendulum Wheel Knuckle Axle Weight + 21mm Hex Adapter - 1Pr Set BulletPoint2 : To increase the weight of each wheel to stabilize the wheel, enlarge the angle of crawling, especially when the car is digging into some low lying area landspaces, grab the ground firmly and smoothly drive back to level. The additional weight is kept downward so the crawler is more grabby to the ground and able to crawl in a larger angle. BulletPoint3 : This part is designed with a bearing in the middle with a delrin collar, the weight pendulum is made narrower on the top and wider at the bottom to allow you to crawl in different angles. Install on the outer drive portal to guarantee the gravity of the chassis stays heavy and low. Weight of single pendulum + hex : 54 grams. The 21mm widen hex is 16mm wider than the original. BulletPoint4 : Accessories included : 21mm Hex Adapter-2pcs ; Stainless Steel Screw Shaft M4x2.5x11-2pcs ; 5mm Spring Steel Shims-2pcs ; 5mm Metal Washer-2pcs ; 19mm Stainless Steel Hex Socket Screws-2pcs. BulletPoint5 : Will fit : 1/10 Traxxas TRX-4 Defender Trail Crawler (82056-4), TRX-6 Mercedes-Benz G63 AMG 6X6 Crawler (88096-4) Color : Silver EducationalObjective : STEM ExternallyAssignedProductIdentifier : 8581701023625 ExternallyAssignedProductIdentifier1 : 602573076712 ExternallyAssignedProductIdentifier2 : 0602573076712 ExternallyAssignedProductIdentifier3 : 00600649518401 GpsrSafetyAttestation : 1 IncludedComponents : Hex Adapter (4) ItemName : GPM For Traxxas TRX-4 Trail Defender Crawler/TRX-6 Merc-Benz G63 Upgrade Parts Aluminum Pendulum Wheel Knuckle Axle Weight + 21mm Hex Adapter - 1Pr Set Red ItemPackageDimensions_Height : 2.2 inches ItemPackageDimensions_Length : 10.5 inches ItemPackageDimensions_Width : 5.5 inches ItemPackageQuantity : 1 ItemTypeKeyword : hobby-rc-vehicle-wheel-and-tire-accessories Language : japanese Manufacturer : GPM ManufacturerMaximumAge : 110 ManufacturerMinimumAge : 14 Material : Plastic Material1 : aluminum Material2 : stainless steel ModelName : PBTDR9002FMS ModelNumber : SPTST8356S NumberOfItems : 1 NumberOfPlayers : 1 OperationMode : Manual PartNumber : GPMTRX4023E-R ProductDescription : GPM For Traxxas TRX-4 Trail Defender Crawler/TRX-6 Merc-Benz G63 Upgrade Parts Aluminum Pendulum Wheel Knuckle Axle Weight + 21mm Hex Adapter - 1Pr Set Red ProductSiteLaunchDate : 2017-09-28T09:03:39.239Z Size : Small StreetDate : 2017-01-01T00:00:01Z SupplierDeclaredDgHzRegulation : not_applicable TargetAudienceKeyword : boys TargetAudienceKeyword1 : adults TargetAudienceKeyword2 : teens TargetGender : unisex UnspscCode : 26111500