M10, M12, M14, M16H (Tamper Proof), M18.
eBay
52mm/60/85mm Car Meters Holder Black Single Gauge Pod Double Triple Car Meters Left Right Drive Bracket for Universal Auto Meter
Aliexpress UK
Sizes: M10, M12, M14, M18, M16H (tamperproof ). 5 pc 1/2" Triple Square Socket bits. These screws are used in high torque applications such as cylinder head bolts and drive train components. Safety Clothing & Accessories.
eBay
52mm/60/85mm Car Meters Holder Black Single Gauge Pod Double Triple Car Meters Left Right Drive Bracket for Universal Auto Meter
Aliexpress UK
Stubby impact spline triple square bit sockets. • 1/2in Drive (total length 38mm) – M16 and M18. Stubby sockets so ideal for access into restricted awkward areas. Spline sockets are also referred to as triple square sockets.
eBay
ICL8038 High Precision Adjustable Signal Generator DIY Kit ICL8038 Sinusoidal Triple-Cornered Square Sawtooth Output 5Hz-400Khz
Aliexpress UK
Triple Square bits are suitable for use with XZN® fixings. Part No 3993. 1/4" Dr: M4, 5, 6 (Length 37mm). Triple Square Socket Set. 1/2" Dr Tamper Proof: M14, 16, 18 (Length 55mm). e.g: ordered by mistake, wrong size ordered etc.
eBay
3pcs 1/4" 1/2" 3/8" Square Drive Torque Wrench Ratchet 5-25Nm 10-60Nm 40-220Nm
Aliexpress UK
75mm: M5, M6, M8, M10, M12. 30mm: M5, M6, M8, M10, M12. Triple Square：12 Point Spline Bit Set. Type：Spline Socket Set. 10 Spline Bit Set (Triple Square) Long & Short Bits. Triple square (spline) bit design ensures secure for and reduces slippage.
eBay
The SVH3 dual-axis rotary drive slewing bearing can be in solar tracker systems ranging from 3 to 10 square meters.
Aliexpress UK
BERLIN TOOLS 8 PIECE 1/4" & 3/8" DRIVE SPLINE BIT SOCKET SET ( M4 - M16 ). SIZES ( 3/8" DRIVE ) : M8 - M10 - M12 - M14 - M16. SIZES ( 1/4" DRIVE ) : M4 - M5 - M6. 12 SIDED SPLINE BIT SOCKETS. KNURLED RING TO ASSIST GRIPPING OF SOCKETS.
eBay
SHAHE High Precision Mini Torque Adapter Square Drive 1/2''1/4'' 3/8'' Digital Torque Wrench Electronic Digital Torque Meter
Aliexpress UK
Sizes range from M5 – M18. Impacted spline bits. Impacted sockets so ideal for use with high torque tools. Spline / triple square sockets.
eBay
Ratchet Torque Wrench Square Drive 10-150N.m Reversible Ratchet Key 1/2 Inch Adjustable Torque Spanner Precise Preset Hand Tool
Aliexpress UK
Triple square / spline / 12 sided sockets this limits the amount of wear on the corners of the fastener and the socket as you have more sides / teeth on the socket biting onto the item. Spline / Triple square sockets.
eBay
Ratchet Torque Wrench Square Drive 5-60N.m Reversible Ratchet Key 3/8 Inch Adjustable Torque Spanner Precise Preset Hand Tool
Aliexpress UK