have been placed on it typically the washers 12 are comprised of steel and serve to prevent the tensioning bolt 6 from breaking the bolt brace 5 which is typically formed of plastic use of the washers 12 also allows the tensioning bolt 6 to rotate more readily relative to the bolt brace 5 once the tensioning bolt 6 is headed down a second sub assembly is then prepared a tension plate spacer 10 is placed on either side of the tension plate 11 the tension plate spacers prevent the tension plate 11 from moving laterally against the outside holder 1 and inside holder 2 the final assembly is then completed the outside holder 1 and inside holder 2 are provided with openings 15 to receive the first and second sub assemblies the outside and inside holders serve to sandwich the first and second sub assemblies to create a solid unit in addition the rocker 3 sandwiches the outside and inside holder halves 1 and 2 to hold them firmly in place the inside and outside holders are fastened together typically with glue along flanges 16 on the upper front lower and rear surfaces thereof next a plastic heel cap 13 and toe cap 14 are placed over the inside and outside holders 1 and 2 the holders are bolted together with conventional bolts and nuts 18 at the front and rear of the assembly each bolt passes through an end cap 13 or 14 a first portion of the rocker 3 the outside holder 1 the inside holder 2 and finally a second portion of the rocker and end cap on.