WH Staple 70mm X 30mm. The 9603 and 9604 stapleguards from Kickstop are bolt through versions of a london bar and are designed to strengthen the wooden door frame once fitted over the locks staple or keep.. Reinforces the frame around the staple (keep) of a rim cylinder nightlatch or lever rim lock. 7mm thick. The 9603 (L8370) fits over lock staple/keep 30mm x 70mm or less. The 9604 (L8373) fits over lock staple/keep 30mm x 97mm or less