GripEdge | Ultimate Triple Square Bundle

Buy 1, Get 1 Free: The Complete RPT™ Triple Square Bundle Triple square fasteners are a high-torque drive by design, which is exactly why they fail hard. The twelve-point contact that lets a 12-spline bolt carry clamp loads on a cylinder head or a driveline flange also means a worn or over-torqued recess rounds out fast, and once it does, a standard socket has nothing square to bear against. This bundle covers both ends of that problem: the controlled hand-drive work where precision matters, and the high-impact removal where torque matters. The MTS39S 39-Pc Master RPT™ Triple Square Socket Set is the complete hand-drive foundation, and the ITS12S 12-Pc RPT™ Standard Impact Triple Square Driver Set ships free, adding impact-rated capability for the fasteners that will not move by hand. Both sets share the same patented RPT™ engagement profile, so torque-transfer behavior is consistent whether you are seating an M4 by hand or driving a seized M18 with an impact gun. Nothing in either set is a reduced-specification piece. What's in the bundle MTS39S: 39-Pc Master RPT™ Triple Square Socket Set. Standard, low-profile, extra-long 6", and tamper-proof bit sockets across 1/4", 3/8", and 1/2" drive. Standard sizes M4-M18, plus tamper-proof MT14, MT16, and MT18. The complete hand-drive foundation covering standard fastening, low-clearance access, deep-reach applications, and security hardware in one case. ITS12S: 12-Pc RPT™ Standard Impact Triple Square Driver Set (FREE). Sizes M4-M18 across 1/4", 3/8", and 1/2" drive. Impact-rated drivers machined from Chromoly steel to withstand the repeated hammer blows of an impact wrench on fasteners that are corroded, seized, or torqued beyond hand-tool range. The engineering behind the grip Reprofiled tooth geometry that loads inward. A standard triple square tool concentrates contact stress at the spline corners and drives material radially outward, enlarging the recess until the drive rounds. The RPT™ profile relocates the contact point along the spline flank and directs force inward, forming a mechanical lock that increases engagement as torque rises. Load transfers into the fastener body rather than shearing the recess walls, yielding up to 50% more torque capacity on undamaged fasteners and up to 400% more on compromised ones. Hand precision and impact power in one system. The MTS39S covers controlled, measured work where feel and clearance matter: low-profile sockets for tight spaces, extra-long sockets for recessed bolts, tamper-proof sockets for security hardware. The ITS12S takes over where hand tools stall, delivering impact-rated removal on fasteners that are seized or torqued past what a hand drive can break loose. Together they span the full service sequence from installation to extraction. Bi-directional engagement. The profile transfers torque in both rotational directions for removal and installation, and grips new and compromised fasteners alike, so a rounded triple square recess can be driven out without resorting to a drill. Full-coverage sizing. Between the two sets you get the complete M4 through M18 triple square range plus MT14-MT18 tamper-proof sizes, spanning the cylinder-head bolts, drivetrain assemblies, suspension components, and interior hardware common to Audi, Volkswagen, Porsche, and other European platforms, as well as European industrial and agricultural equipment. Materials and marking. The MTS39S hand-drive sockets are precision-machined from S2 tool steel for torsional strength; the ITS12S impact drivers are formed from Chromoly steel for impact durability. Both carry corrosion-resistant finishes and clear size markings, and the master set ships in a custom-molded case with a removable textured EVA foam inlay and printed size labels.