Item Name:California Bloodless Castration Bands Only (25 pk) Material:Heavy Duty Elastic Bands Size:Elastic Bands 127 mm x 8 mm Long Finish:**** Hardness:**** Cat #ZA-04-146-08 Packing:Poly Zip Close Bag Description:Elastic Bands are quick and simple to use with California Bander for bloodless castration. Directions for use: hold Bander in one hand, insert T-clip located at the tip of each band into the Bander's slotted end, with the other hand extend band taught around the sac and clip band onto the T-clip.