These are the Big Bore Shock Springs: 45mm Dark Green (58GF/mm) (2pcs) For the Team Durango 1/10 Electric Off Road Buggies and Short Course Truck FEATURES: This is an official Team Durango spare/optional part set constructed from high quality materials. INCLUDES: Two shock springs, dark green compression rating COMMENTS: This part is optional for DEX410 1/10 Electric 4WD Off Road Buggy DEX410R 1/10 Electric 4WD Off Road Buggy DESC410R 1/10 Electric 4WD Short Course Truck (TDRC0130) DEX210 1/10 Electric 2WD Off Road Buggy (TDRC0010) DEX410v3 1/10 Electric 4WD Off Road Buggy (TDRC0120) DEX410Rv3 1/10 Electric 4WD Off Road Buggy 5/23/12 pjw ir/jxs