3" (7.6 cm) long ABS with 1¼"(3.2 cm) OD - Series 63
Based on the air flow rate your compressor can provide, choose a Low-Flow, Medium-Flow, or High-Flow stinger. (For maximum cleaning aggression, choose the highest air flow available from your compressor).
Determine your desired blast pressure (i.e.: if you wish to blast at 90 psi (6.2 bar), choose an LF85, MF85, or HF85 stinger, each with an operating range of 50 - 100 psi (3.4 - 6.9 bar).