Stephens leather back /Curb strap with metal insert Broad leather back peice with a metal insert making it more rigid. £29.95 Colour: [Choose]BlackHavana Buckle: [None]BrassStainless Steel Quantity: at £29.95 each Add To Basket New for 2019. Quality English made Leather back strap with brass buckles. The broad back strap has a metal insert which gives rigidity and curb pressure, which standard leather back straps will not give. One size only. Available in black and brown. Now available with either brass or stainless steel buckles.