Ring Wrench Proline Tools 58711 12 pcs

Set of rectangular step drill bushings with paired inner and outer diameters for close incremental sizing: 6x7 mm (36566), 8x9 mm (36568), 10x11 mm (36570), 12x13 mm (36572), 14x15 mm (36574), 16x17 mm (36576), 18x19 mm (36578), 20x22 mm (36580), 21x23 mm (36581), 24x27 mm (36584), 25x28 mm (36585), 30x32 mm (36590).

Advantages

The set provides a range of close incremental sizes for precise fitting and alignment when drilling or finishing holes. Each bushing is identified by its paired dimensions and manufacturer code for easy selection and replacement. The compact assortment covers commonly used small to medium diameters, reducing the need for multiple individual bushings and simplifying tool storage.

Suitable for

• Guide bushings in drill jigs and fixtures
• Alignment and sizing during reaming or finishing operations
• Prototype work and small- to medium-diameter hole production
• Maintenance and repair tasks requiring precise hole location

Key specifications

• Sizes: 6x7 mm (36566)
• Sizes: 8x9 mm (36568)
• Sizes: 10x11 mm (36570)
• Sizes: 12x13 mm (36572)
• Sizes: 14x15 mm (36574)
• Sizes: 16x17 mm (36576)
• Sizes: 18x19 mm (36578)
• Sizes: 20x22 mm (36580)
• Sizes: 21x23 mm (36581)
• Sizes: 24x27 mm (36584)
• Sizes: 25x28 mm (36585)
• Sizes: 30x32 mm (36590)

How to use

Select the bushing whose inner and outer diameter pair matches the required hole size and insert it into the drill guide, jig, or tooling assembly. Ensure the bushing is securely seated and aligned before drilling or reaming, then perform the machining operation using appropriate feed and speed for the workpiece material. After use, clean each bushing of chips and lubricant, then store in a dry place to maintain dimensional accuracy.

Usage recommendations

Inspect bushings for wear or deformation before use and replace any that show excessive clearance; selecting the correct bushing size for the tool shank and workpiece material improves hole quality and extends tool life.