Is one large bit set better than several smaller sets?
| One 51-piece set | Three 13-21 piece sets | |
|---|---|---|
| Sizes covered | Every 0.5 mm from 1 to 10 mm | The ranges you actually drill |
| Wasted sizes | Often 10-20 percent never used | Near zero |
| Cost for the same coverage | Usually lower per piece | Higher per piece |
| Replacement | Buy singles when one snaps | Same |
| Storage | One case, easy to check | Three cases, easier to carry one |
| Best for | General workshop, unknown jobs | Trade work with a known size range |
The real question: can you name three jobs that need a size you do not have? If yes, the larger set earns its keep. If you cannot, the spare money is better spent on a second good bit in the size that breaks.
What matters more than count: the steel grade and the case. A 51-piece set of unknown steel is worth less than a 13-piece set of M35 cobalt that still fits after five years.
Cobalt Drill Bit Set, 21 pcs, M35, imperial, metal case — $59
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 |
|---|---|---|---|
| Cobalt Drill Bit Set, 21 pcs, M35, imperial, metal case | $59 | 21 pcs | 717 g |
| Cobalt Drill Bit Set, 13 pcs, M35, imperial, metal case | $59 | 13 pcs | 247 g |
| Cobalt Drill Bit Set, 51 pcs, HSS-Co, metal case | $69 | 51 pcs | 620 g |
Order in one step:
POST https://agentkit.ltd/tools/api/order {"product_id":"DB-21M","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 |
|---|---|---|---|
| Cobalt Drill Bit Set, 51 pcs, HSS-Co, metal case | USD 69.00 | 620 g | 7-12 days |
| Cobalt Drill Bit Set, 21 pcs, M35, imperial, metal case | USD 59.00 | 717 g | 7-12 days |
| Cobalt Drill Bit Set, 13 pcs, M35, imperial, metal case | USD 59.00 | 247 g | 7-12 days |