{"product_id":"rockmore-t51-drop-centre-xtrac-bits","title":"Rockmore T51 Drop Centre Xtrac Bits","description":"\u003cp\u003eDrop centre Xtrac bits for T51 drill strings. A drop centre drills straighter holes in medium to hard rock. Xtrac bodies are tapered retrac bodies with flat spline grooves. Diameters 3-1\/2 in (89 mm) and 4 in (102 mm). Hemispherical or semi-ballistic carbide.\u003c\/p\u003e","brand":"Rockmore","offers":[{"title":"3-1\/2 in (89 mm) \/ Hemispherical, 8×1\/2 + 4×1\/2","offer_id":67689602908412,"sku":"T51-89BRTDC-3988","price":0.0,"currency_code":"USD","in_stock":true},{"title":"4 in (102 mm) \/ Hemispherical, 8×5\/8 + 4×1\/2","offer_id":67689602941180,"sku":"T51-102BRTDC-3993","price":0.0,"currency_code":"USD","in_stock":true},{"title":"4 in (102 mm) \/ Semi-ballistic, 8×5\/8 + 4×1\/2","offer_id":67689602973948,"sku":"T51-102BRTDCB-4034","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/9030\/2460\/files\/thb-t51-p32-21_d0d6e57a-3f9c-47ec-840c-861fcddda830.jpg?v=1791836009","url":"https:\/\/frankdrill.com\/products\/rockmore-t51-drop-centre-xtrac-bits","provider":"FrankDrill","version":"1.0","type":"link"}