The Golfsmith Straight Fluted Hand Reamer (0.370") is a precision club-repair tool engineered for professional clubmakers and serious DIY enthusiasts who demand accuracy during re-shafting work. Designed specifically for finishing and re-conditioning 0.370" hosel bores, it delivers a consistently clean bore surface that ensures an optimal epoxy bond between shaft and hosel. Whether you are converting a tapered hosel to accept a parallel 0.370" shaft or simply cleaning up an existing bore after shaft removal, this reamer gives you professional-grade results in a hand-operated tool.
The straight fluted geometry creates a smooth, controlled cutting action that removes only the necessary amount of material — up to 0.003" (approx. 0.1 mm) per side — leaving a clean bore wall free of tool marks. This high surface finish is critical for maximising contact area and adhesion strength of the epoxy when bonding the shaft to the hosel.
A specially designed tapered lead section at the tip of the reamer guides it precisely into the existing hosel bore, centralizing the tool automatically before cutting begins. This reduces the risk of off-axis reaming and ensures the finished bore remains true to the original centerline of the hosel.
Specifically designed for manual operation with a tap wrench or chucking handle, the reamer can also be mounted in a drill press running at or below 150 RPM. For best results, use cutting oil and maintain a steady, moderate feed rate — turning too fast or too slowly can cause chatter and an uneven bore surface.
The 0.370" tip diameter is the industry-standard parallel tip size for iron shafts. This reamer is the go-to tool when preparing a hosel to accept a fresh parallel-tip iron shaft or when enlarging a tapered 0.355" bore to the 0.370" parallel standard, giving clubmakers full flexibility in shaft selection.
| Specification | Detail |
|---|---|
| Product Code | TL300 |
| Brand | Golfsmith |
| UPC | 5027084366902 |
| Bore Diameter | 0.370" (9.4 mm) |
| Material Removed per Side | Up to 0.003" / 0.1 mm (nominal) |
| Design Type | Straight Fluted |
| Compatible Alloys | 17-4 PH Stainless Steel, 6AL-4V Titanium, and most standard iron alloys |
| Operation Mode | Hand reaming (primary); Drill press at ≤ 150 RPM (secondary) |
| Typical Application | Finishing / re-conditioning 0.370" hosel bores for re-shafting |
| Category | Club Repair Tools (Servis holí) |
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