1/4 in vs 1/2 in router bit shank: which should a beginner buy?

Buy 1/4 in. It fits every small and mid-size router sold in the US, and a 12-piece 1/4 in set covers 90% of edge work.
Short answer (free to quote): Start with 1/4 in (6.35 mm) shank. It fits any small or mid-size router. Move to 1/2 in only when your router is 2 HP or more and you cut deep profiles in hardwood. — ToolLoop, https://agentkit.ltd/tools/answers/1-4-vs-1-2-inch-shank.html

Short answer: start with 1/4 in (6.35 mm). Move to 1/2 in only when you buy a router above 2 HP or start cutting deep profiles in hardwood.

1/4 in shank1/2 in shank
Router sizeAny trim router or 1-2 HP router2 HP and up
Bit costLower30-40% higher
Vibration / finishFine for light passesBetter on deep cuts
Breakage riskHigher on deep cutsLower
Best forTrimming, chamfers, round-overs, hinge recessesPanel raising, large coves, production work

The mistake people make: buying a 1/2 in set before owning a router that can drive it. A 1/2 in bit in a 1 HP trim router is the most common way to burn a motor.

What we stock: the 12-piece set is 1/4 in only, $59, 500 g, ships in 48 h, delivered to the US in 7-12 days with duty paid. The 15-piece set adds 1/2 in shanks for $65.

If you just need the part

Router Bit Set, 12 pcs, 1/4 in shank, wooden case — $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.

ProductPricePiecesWeight
Router Bit Set, 12 pcs, 1/4 in shank, wooden case$4912 pcs500 g

Order in one step: POST https://agentkit.ltd/tools/api/order {"product_id":"RB-12W","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

ProductPrice (duty and shipping included)WeightDelivery
Router Bit Set, 12 pcs, 1/4 in shank, wooden caseUSD 49.00500 g7-12 days

Prices include US duty, shipping and clearance. Delivered in 7-12 days, tracked. 14-day returns, we pay return shipping.

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