The bevel angle on the trademark face of the nail allows the nail to lock in better in all types of shoes punched for E-Heads, including concave. The slightly larger specifications of the shank immediately under the head will provide additional strength and a better fit in the pritcheling of the shoe. FEATURES " Extra strong and durable material " Extra length " Extra pitch " Modified head design " Extra sharp and smooth BENEFITS " Modified head design works well in concave and shoes punched for E-head nails " Perfect in combination with pads " Extra sharp and smooth for less damage SPECIFICATIONS: Material: Steel Box Size: 250 A: 5.5mm D: 9.8mm H: 59mm K: 6.9mm Weight: 2.40