A bit gag is a good alternative for those who may have small mouths or have trouble breathing with a traditional ball gag. Bit gags are also used for pony play. The bit on this Spartacus gag is made of silicone, which is easy to clean and sanitize. The bit measures 4" long (3" bite area) x 2.5" circumference. 2" metal O-rings attach the bit to the adjustable leather head strap (18"-23", with incremental adjustable buckle closure).