Benchmade 741SBK Onslaught Bob Lum Axis Folding Knife Lock ComboEdge BK1 Hole Blade ComboEdge. BK1 Coated Blade. AXIS locking mechanism. 154CM stainless steel blade (58-61HRC). Modified clip-point blade with ambidextrous thumb-hole opener. Black G10 handle scales with 420J stainless steel liners. Blade Length: 4.28" Blade Thickness: 0.121" Handle Thickness: 0.650"