Patented POWER LOCKS hold more pressure, longer. Provides 600 lbs of one-handed force. Double Locking Swivel Jaws to allow even distribution of clamping forces. I-Beam Bar for reduced flexing and bowing. Quick Change Screw to allow for easy conversion to spreader.As I don't foresee a need for all of these, it's time to let some go.... Feel free to ask any questions you may have.... Please check out my other DIY tools & woodworking related items - Including additional clamps... The item "4 NEW Irwin Quick-Grip XP600 12 Heavy Duty Bar Clamps / Spreaders Made in USA" is in sale since Sunday, November 06, 2016. This item is in the category "Home & Garden\Tools\Hand Tools\Clamps & Vises". The seller is "ctwoodworking3" and is located in New Hartford, Connecticut. This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, to Japan, to China, SE, KR, ID, to Taiwan, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, RU, IL, to Mexico, to New Zealand, PH, SG, to Switzerland, NO, SA, UA, AE, QA, KW, BH, HR, MY, CL, CO, CR, DO, PA, TT, GT, SV, HN, JM, AG, AW, BZ, DM, GD, KN, LC, MS, TC, BB, BD, BM, BN, BO, EC, EG, GF, GG, GI, GP, IS, JE, JO, KH, KY, LI, LK, LU, MC, MO, MQ, MV, NI, OM, PE, PK, PY, RE, BR.