50mm Single Locking Long Throw Lock with Elongated Keep and Stainless Steel Bar For Gates and Doors up to 50mm Thick Single Lock - Key Lockable from One Side - Black Finish with Stainless Steel Bar 6 pin mechanism for higher security and greater key variations. Can be fitted on left or right handed doors/gates. Heavy duty A4/316 marine grade stainless steel bolt. Solid brass escutcheon plate. Stainless steel fixings for extra protection against corrosion. Key front, spring latch rear. 5 keys supplied.