TheWolf Tooth B-RAD Mounting Base 3 Slotis created from lightweight, durable, rust-proof materials.Bases are the foundation for theB-RAD systemand the rest of theB-RAD systemmounts to them. Wolf Tooth B-RAD 3 Mounting Base Features Reposition bottle cages using existing bottle cage mounts on your bike. Customize storage to your specific needs with flexible B-RAD system B-RAD 2 -The 2-Slot Base can move bottle or other accessory to an optimal location even on a smaller or dual suspension frame B-RAD 3 -The 3 slot base with 4 threaded holes provides additional adjustment and mounting options vs the B-RAD 2. A typical application would be to mount a bottle cage in the forward threaded holes with a B-RAD accessory tucked behind it. This mounts perfectly to triple bottle mounts on frames and forks. The B-RAD 3 includes a zip tie, channels for the zip tie, and a foam pad for secure mounting B-RAD 4 -The 4 slot base is the longest base with 9 threaded holes for the ultimate flexibility and capacity when bike packing, touring, commuting or just exploring on 2 wheels. It′s long enough to mount 2 small bottles inline or multiple accessories. The B-RAD 4 includes zip ties, channels for the zip ties, and a foam pad for secure mounting DOGBONE -The Dogbone can be used to offset a bottle or other accessory to an optimal location. Most commonly used for smaller, curved or dual suspension frames Wolf Tooth B-RAD 3 Mounting Base Compatibility Mounting any of the bases requires the use of at least 2 standard threaded bottle cage mounts. B-RAD 3 and 4 should use the auxiliary foam pad (to protect your frame) and zip tie to secure the base. Any other mounting methods are not recommended You may need a Problem Solvers Space Out Kit or similar method to clear the front derailleur clamp. Be sure to use bolts with additional length equivalent to the extra spacing added. Compatible with any frame that uses standard 64mm spacing bottle cage braze-ons (basically every modern frame) Wolf Tooth B-RAD 3 Mounting Base Specifications Weight: B-RAD 2 - 27g, B-RAD 3 - 41g, B-RAD 4 - 75g, Dogbone - 10g Material: 6061-T6 aluminum brackets, EVA foam pad Torque: 3-4 Nm Max Load: 1700g per base Made in the USA