The F3501/8 CL064 from Alpha Wire is flexible heat shrink tubing with a 0.125" (3.18 mm) diameter, 2:1 shrink ratio, in clear, supplied in 0.500 ft (152.40 mm, 6.00") lengths.
The F3501/8 CL103 from Alpha Wire is flexible heat shrink tubing with a 0.125" (3.18 mm) diameter, 2:1 shrink ratio, in clear, supplied in 4.00' (1.22 m) lengths.