Features and Benefits:Handle Material is Conductive/Anti-Static ESD SafeExact Fit Precision Machined Hex TipsWiha exclusive formula CRM-72 Tool Steel BladesCorrosion Resistant Micron Vapor Chromed finishTapered Slim Handles Proportioned to Blade SizeSlimLine Blade belt set holds 12 Slimline Blades securely and allows easy access to the tips you need.The Set includes Slotted 4.0mm and 5.5mm, Phillips #1 and #2, Square #1 and #2, Torx T15, T20, and T25, Hex 2.5, 3.0, and 4.0mm