These are stainless steel Metric 4X0.7X5mm set screws for the USFS approved spark arrestors TRS-1, GGT-2 & GGT-3 adapter. Includes qty 2 set screws.
Part# RP-SS-4 Technical Data:
Set screw-Material: stainless steel, Thread size: 4X0.7mm, Length: 4mm, Allen key size: 2mm
Qty-2
Weight- 0.4grams/0.01oz (for qty 2)