4 model

Free

Rock Bolt Mechanical Interlocking Trial Model (Bumpmesh Textured)

MyMiniFactory

Free

zyltech 20 series 2020 extrusion carriage for wheels with 5mm bore 20mm hole spacing

Thingiverse

Free

Hole, Bore, and Hex Pocket Calibration Models

Printables

Free

Hole size Checker → 1 - 10.9 mm / 0.1 mm steps ←

Printables