# CRB door-knob butt cap CRBC-25 (size 25 mm)

> What are the dimensions of the CRB door-knob butt cap CRBC-25 (size 25 mm)?

- Category: Fishing › Grips and butt hardware
- Kind: Modern device
- Basis: Secondary source: Mud Hole Custom Tackle (CRB) (copy of the maker's figures; the maker publishes none directly)
- Page: https://xemstudio.com/objects/crb-door-knob-butt-cap-crbc-25/ · JSON: https://xemstudio.com/api/geometry?object=crb-door-knob-butt-cap-crbc-25 · Plain text: https://xemstudio.com/objects/crb-door-knob-butt-cap-crbc-25/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 38.1 | 38.1 | 50.8 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- CRB's door-knob butt cap fits over a grip or butt of about 25 mm; Mud Hole publishes ID, OD and length.
- The rounded knob profile and bore depth are not published, so only an envelope with the bore diameter can be built.
- Retailer/brand-owner Mud Hole is the only source (secondary).
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.

## Sizes

| dimension | value |
|---|---|
| Nominal size | 25 mm |
| Inside diameter | 24.89 mm (0.98 in) |
| Outside diameter | 38.1 mm (1.5 in) |
| Length | 50.8 mm (2.0 in) |
| Bore depth | not published |

## Where the files are

- Mud Hole Custom Tackle (CRB): [CRB Door Knob Style Butt Caps - size chart](https://mudhole.com/en-ca/products/crb-door-knob-style-butt-caps) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/crb-door-knob-butt-cap-crbc-25/index.json

- crb-door-knob-butt-cap-crbc-25-envelope: [STEP](https://xemstudio.com/files/hardware/crb-door-knob-butt-cap-crbc-25/crb-door-knob-butt-cap-crbc-25-envelope.step) · [STL](https://xemstudio.com/files/hardware/crb-door-knob-butt-cap-crbc-25/crb-door-knob-butt-cap-crbc-25-envelope.stl) — Envelope Ø38.1 × 50.8 mm (bore depth and profile not published, not modelled)

## Questions

**What fits a CRBC-25 butt cap?**

A butt or grip up to 24.89 mm (0.98 in) diameter.

## Fits with

- [Fuji GC22 decorative graphite gimbal](https://xemstudio.com/objects/fuji-gc-graphite-gimbal-gc22/)
- [Fuji GC25 decorative graphite gimbal](https://xemstudio.com/objects/fuji-gc-graphite-gimbal-gc25/)
- [CRB door-knob butt cap CRBC-20 (size 20 mm)](https://xemstudio.com/objects/crb-door-knob-butt-cap-crbc-20/)
- [CRB door-knob butt cap CRBC-22 (size 22 mm)](https://xemstudio.com/objects/crb-door-knob-butt-cap-crbc-22/)