Half Round Sled Runners (6 Pack) 24 in A patented vari disc key provides Type:145cc Lower A patented vari disc key provides up to ten times the wear resistance than aluminum or brass keys 75 FLUID OUTLET THREAD GENDER Female FLUID OUTLET THREAD TYPE NPT MAXIMUM AIR INLET PRESSURE (PSI) 150 MAXIMUM CONTINUOUS CYCLE RATE (CPM) 170 MAXIMUM WORKING PRESSURE (PSI) 150 MODEL Fast Ball POWER TYPE Pneumatic PUMP RATIO 1:1 SERIES 100 SOUND PRESSURE LEVEL (DB(A)) 73 Both ends turned up for use in either direction the MARSHALLTOWN Half Round Sled Runners come with both ends facing up to give you the choice to go in either direction