This Double Driver Socket & Bit Set from Draper is manufactured & tested generally in accordance with DIN3122 & ISO3315 specifications. The set comes complete with a special double-sided stubby reversible ratchet with 1/4" square drive male & 1/4" hexagon female drive head. Packed in a carrying case. Draper Expert HI-TORQ is a registered trademark of Draper Tools Ltd. Draper TX-STAR products are compatible with † Torx fixing systems. † Torx is the registered trademark of Acument Intellectual Properties LLC.