For ease of installation pre-packaged screw and insert kits are available.  -2.0 uses RAMPA Pack 1 -2.0 Plus uses RAMPA Pack 2 -2.0 Heavy uses RAMPA Pack 3 or 4 -2.0 Long uses RAMPA Pack 3 or 4 ****NOTE RAMPA PACK 3 OR 4 DOES NOT FIT CHANNEL 2.0 OR 2.0 PLUS****