Aluminum crossbar & 18-8 Stainless steel j bolt sets.Designed for batteries 6.89inch(175mm) wide or slightly narrower.Tie down bracket overall length - 8.58inch (218mm),bolt center to bolt center length - 7.48inch (190mm).Exclusive Finishment: Dual surface treatment, Eliminate the mill marks and burrs of CNC machining,and the bracket is sand-blasted and anodized for an elevated, frosted texture.Usually fits most group 21, 21R,22F,22HF,22R, 24, 24F, 24H, 24R, 24T, 25, 26, 26R, 26/70 27, 27F, 27H, 28, 29H, 30H, 31, 31A, 31T, 33, 34, 34R, 34/78, 35, 40R, 41, 42, 43, 46, 47, H6(48), H8(49), 85, 86, 90, 91, 92, 93, 94R,95R, 96R,97R, 98R, 99, 124, and 140R batteries.Colour:RedMaterial:aluminumPackage Contents:1x Battery Hold Down Bracket1x J Bolt SetsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.