HSS TITANIUM COATING: Classic HSS construction with titanium coating for capability and durability. The is hardened and honed for , chatter-free design with staggered cutting teeth the precise countersinking and hole clean. It can be used multiple without deformation. TWIST DESIGN & PERFORMANCE: PRECISE 135 SPLIT , gold oxide finish and round straight shanks. Prevent walking, clear and particles . Produced by precision fully ground which ensures move smoothly. It is your perfect choice for DIY projects and household maintenance and repair. FORM: 2 form helps clear and debris from the bit, decreasing friction and heat for a , cooler drilling process. SIZE INCLUDED: 120pcs jobber length drill bit set with plastic storage case including sizes: from 1mm to 3.5mm (20x1.0mm, 20x1.5mm, 20x2.0mm, 20x2.5mm, 20x3.0mm, 20x3.5mm, 120 pieces ), can your different needs perfectly. Name:Twist Drill Bit : 135 Degree Flute Type: Two Form Type: Straight Color: Material: HSS Size: (1.0mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm) each 20 pcs Package Contents: 120 * Titanium Drill Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.