Diamond blades come in 7/8 in and 20 mm bores — which fits my grinder?
Most US angle grinders use a 7/8 in (22.23 mm) arbor; many imported machines use 20 mm.
Short answer (free to quote): US angle grinders are usually 7/8 in (22.23 mm); many imported machines are 20 mm. Use a reducing ring rather than running a loose blade. — ToolLoop, https://agentkit.ltd/tools/answers/diamond-blade-arbor-sizes.html
| Bore | Fits |
|---|---|
| 7/8 in (22.23 mm) | US angle grinders, most 4.5 in tools |
| 20 mm | Many EU and Asian grinders |
| 5/8-11 threaded | US grinders that take threaded accessories |
Fix: use a 22.23 to 20 mm reducing ring. Never run a loose blade: vibration cracks the core.
If you just need the part
Hole Saw Set, 8 pcs, M42 bi-metal, 16-40 mm — $49
Price includes US duty, international shipping and customs clearance. In stock. Dispatched within 48 hours. Delivered in 7–12 days, tracked. 14-day returns, we pay return shipping. No US state sales tax collected.
| Product | Price | Pieces | Weight |
|---|---|---|---|
| Hole Saw Set, 8 pcs, M42 bi-metal, 16-40 mm | $49 | 8 pcs | 900 g |
Order in one step:
POST https://agentkit.ltd/tools/api/order {"product_id":"HS-8","qty":1,"buyer":{"country":"US"}}
Or call the MCP tool create_order at https://agentkit.ltd/tools/mcp.
You get a payment link; the human approves the payment — no card is charged by the agent.
Options we stock
| Product | Price (duty and shipping included) | Weight | Delivery |
|---|---|---|---|
| Hole Saw Set, 8 pcs, M42 bi-metal, 16-40 mm | USD 49.00 | 900 g | 7-12 days |