McMaster 9662K44 Compression Spring Stock, Spring Steel, 36" Long, 0.75" OD, 0.59" ID G1402572 Standards Leaping Bunny Approved as Standards Leaping Bunny Approved as Cruelty Free 147 Key Type Keyed Different Features Reserved for Safety Cylinder Body Thickness 3 4 in Locking Mechanism 6 Pin Tumbler Vertical Shackle Clearance 1 1 2 in Number of Keys Included 1 Labeling Label Attached Resistance Properties Chemical Resistant Number of Tumbler Pins 6 Header Danger Non Removable Key Yes Padlock Brand Master Lock Horizontal Shackle Clearance 25 32 in Includes Label Padlock Label Language English Opening Type Key Key Style Standard Key Combinations 40 These springs are extra long to cut a custom length whenever you need it first multiply the spring rate given by the spring's original length