9 piece, bi-metal hole saw kit, designed for plumbers, includes: 3/4″, 7/8″ 1-1/8″, 1-3/8″, 2″, 2-1/2″ hole saws, 2l & 5l arbors, 5l arbor adaptor. Kits are more durable, metal pin hinge won’t break or tear, lockable standard padlocks can be used to secure kit contents, secure metal latches close case tightly & securely.