1) V type and L type are the same, just different installation method. 2) Instruction is not included in package, if you have difficulties in installation, please contact our staff for further help! - HEALTHY FOR YOUR CAT - This cat scratching toy can help relieve stress in cats, remove old material from their claws, and keep them in good shape. It also prevents your furniture from getting scratched! - UNIQUELY ENGAGING - Unlike other cat scratching toys that don't move, our sisal cat scratcher ball can spin in order to keep the cats and kitten busy for hours! - WITHSTANDS HEAVY SCRATCHERS - This cat scratching toy is made with a stable wood base and strong sisal fabric, it won't get easily damaged or look worn with daily use. - COMPACT & VERSATILE: Our Cat Scratching Ball Toy is compact and easy to place in various locations throughout your home. Whether placed on the floor, carpet, or even mounted on a scratching post.