The F221B1/16 CL100 from Alpha Wire is flexible clear heat shrink tubing with a 0.062" (1.57 mm) diameter and a 2:1 shrink ratio, supplied in 4.00 ft (1.22 m) lengths.
The F221B1/16 CL205 from Alpha Wire is flexible clear heat shrink tubing with a 0.062" (1.57 mm) specification, a 2 to 1 shrink ratio and a 0.333' (101.60 mm, 4.00") specification, sold in packs of 50.
The F221B1/16 BK100 from Alpha Wire is black flexible heat shrink tubing with a 2 to 1 shrink ratio for a 0.062" (1.57 mm) diameter, supplied in 4.00' (1.22 m) lengths.
The F221B1/16 BK205 from Alpha Wire is flexible black heat-shrink tubing with a 0.062" (1.57 mm) diameter and 2:1 shrink ratio, 0.75" (19.05 mm) length, supplied in packs of 50.