K&L Small Hole Gauge Set
Four-piece adjustable small hole gauge set covering .125 in. to .500 in. (3 mm to 13 mm) for precision internal diameter measurement and inspection work.
The K&L Small Hole Gauge Set is designed for measuring small internal openings where direct measurement with a standard caliper may be difficult. Each gauge features a knurled adjustment knob at the handle for controlled sizing inside the bore or opening.
The four-piece set covers a total range from .125 in. to .500 in. (3 mm to 13 mm) and includes a storage pouch to help keep the gauges organized between jobs.
Key Features
- 4-Piece Gauge Set: Covers four overlapping measurement ranges from .125 in. to .500 in.
- 3 mm to 13 mm Range: Suitable for measuring a variety of small internal openings and bores.
- Knurled Adjustment Knob: Allows controlled adjustment of each gauge from the handle.
- Multiple Gauge Lengths: Individual gauges are sized from 3-5/8 in. to 4-1/4 in. long.
- Storage Pouch Included: Keeps the complete set together and protected between uses.
- Precision Inspection Tool: Useful for compatible motorcycle, automotive, marine, powersports, machining, and general mechanical measurement work.
Included Gauge Sizes
| Measurement Range |
Metric Range |
Gauge Length |
| .125 in. - .200 in. |
3 mm - 5 mm |
3-5/8 in. |
| .200 in. - .300 in. |
5 mm - 7.5 mm |
3-7/8 in. |
| .300 in. - .400 in. |
7.5 mm - 10 mm |
4 in. |
| .400 in. - .500 in. |
10 mm - 13 mm |
4-1/4 in. |
Product Information
| Product Type |
Small hole gauge set |
| Set Quantity |
4 gauges |
| Overall Measuring Range |
.125 in. - .500 in. (3 mm - 13 mm) |
| Adjustment |
Knurled knob at handle |
| Storage |
Storage pouch included |
| Yamaha Reference |
YU-33258 |
| SKU |
35-9122 |
Measurement Note: Small hole gauges are used to capture the internal size of an opening for comparison with a separate precision measuring instrument. Follow the applicable service procedure when checking critical dimensions.
