Models : - 14.0151 : Shear Smart Pad 16" x 16" - 14.0152 : Shear Smart Pad 16" x 18" - 14.0153 : Shear Smart Pad 18" x 16" - 14.0142 : Shear Smart Pad 18" x 18" - 14.0154 : Shear Smart Pad 18" x 20" - 14.0143 : Shear Smart Pad 20" x 18" - 14.0156 : Shear Smart Pad 20" x 20"