Tubes al alloy 6061, qq-a-225/8 and 2024, qq-a-225/6, sleeve knurled and end fitting alum alloy 6061, qq-a-225/8, ball race and sleeve 17-4ph cres per ams5673 qq-w-423, balls 440c cres per qq-s-763, bearing ms14102, extended and locked assembly 22.200 to 22.700 in, assy intermediate and locked 16.650 t0 17.250 in, assy retracted and unlocked 11.200 to 12.200 in