uxcell 12 Tooth Roller Sprocket B Type, 25 Chain, Single Strand 1/4" Pitch, 10mm Bore Black Oxide C45 Carbon Steel with Set Screws for ISO 04C auspowers_batchone 9" 4th Generation pen has

9" 4th Generation pen has a good touch point than the tip of your finger

Fully pressure tested in factory

Paired with your electric drill

23 inches (LD)

Grommet Kit

uxcell 12 Tooth Roller Sprocket B Type, 25 Chain, Single Strand 1/4" Pitch, 10mm Bore Black Oxide C45 Carbon Steel with Set Screws for ISO 04C auspowers_batchone 9" 4th Generation pen hasuxcell 12 Tooth Roller Sprocket B Type, 25 Chain, Single Strand 1 4" Pitch, 10mm Bore Black Oxide C45 Carbon Steel with Set Screws for ISO 04C Product Features Package Content: 1 x Chain Sprocket, 2 x Set Screws Chain Sprockets are normally mounted in a fixed position on a fixed shaft. Round hole with 2pcs Set Screws at 90 degrees. The shaft can be fixed well, which is convenient to use. The chain sprocket should not rotate at a greater speed than is