Neilen 9pc Extra Short & Long Metric Ball Point Hex Allen Key Set 1.5mm - 10mm Extra-short arm for use on difficult-to-access screws. Long side with ball head allows dependable working even in difficult situations. S2, surface coating chrome plated or color coded. Size: 1.5mm x 90mm length x 5.5mm short end 2.0mm x 100mm length x 6.0mm short end 2.5mm x 112mm length x 7.5mm short end 3.0mm x 126mm length x 10mm short end 4.0mm x 145mm length x 10mm short end 5.0mm x 160mm length x 12mm short end 6.0mm x 180mm length x 15mm short end 8.0mm x 200mm length x 19mm short end 10mm x 219mm length x 20mm short end