{"product_id":"two-piece-123-block-set-ultra-precision-machinist","title":"Two Piece 123 Block Set Ultra Precision Machinist Blocks 1 Inch By 2 Inch By 3 Inch Hardened Tool Steel Ground On All Sides 0.0002 Inch Tolerance With 23 Holes Square And Flat For Accurate Setup And Measurements","description":"\u003cdiv\u003eTwo-Piece 1-2-3 Block Set: Hardened Tool Steel, 23 Holes\u003cbr\u003e\n✔️ 1 x 2 x 3 in blocks,.0002 in tolerance, 23-hole, hardened steel \u003cp\u003eThese two-piece 1-2-3 blocks are hardened tool steel and ground on all six sides for true squareness and flatness. Measuring 1 x 2 x 3 in, they are built for accurate setup and measurement in milling, drilling, and inspection work. The set includes 23 holes for precise locating and 5 tapped holes to 3\/8-16, with a surface finish of 6-16 microinches and hardness around HRC 56-62.\u003c\/p\u003e ✅ Size: 1 x 2 x 3 inches, two-piece matched pair\u003cbr\u003e\n✅ Material: hardened tool steel, ground on all six sides\u003cbr\u003e\n✅ Holes: 23-hole pattern for locating and alignment\u003cbr\u003e\n✅ Tap holes: 5 tapped to 3\/8-16; rest untapped\u003cbr\u003e\n✅ Finish \u0026amp; hardness: 6-16 microinches, HRC 56-62\u003cbr\u003e \u003cp\u003e💡 What is a 1-2-3 block set used for in precision machining?\u003c\/p\u003e\nA handy reference for layout, squaring, and measurement.\n- Helps square up edges and verify perpendicularity.\n- Used in milling, drilling, and inspection for repeatable setups.\n- 23-hole pattern allows flexible locating and spacing.\n- Hardened tool steel ensures durability in busy shops.\n✝️\u003c\/div\u003e","brand":"Amazon","offers":[{"title":"Default Title","offer_id":49136109289707,"sku":"VXB0CP3QNDGP","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/3268\/0683\/files\/51SXJlAG7lL.jpg?v=1785641412","url":"https:\/\/vxb.com\/products\/two-piece-123-block-set-ultra-precision-machinist","provider":"VXB Bearings","version":"1.0","type":"link"}