Just like the title says. This one is for mounting something like an X300, Inforce WML, or TLR series light at a 45 degree off-set. Same is in very good to like-new condition and the screws already have thread locker applied. Only selling because I was using on a rifle for work, which I no longer have. $35 OBO. Ship USPS. PayPal discreet or USPS MO. SOLD (on ARF.com)