You are looking at an AmeriBRAKES ASD Severe Heavy Duty Disc Brake Pad Service Kit.

Replacement Parts For Mercedes Benz Sprinter Van 3500, 3500XD, 4500 2019-2020 Single Rear Wheel
Replacement Parts For Freightliner Sprinter Van 3500, 3500XD, 4500 2019-2020 Single Rear Wheel

KIT INCLUDES: 

1x Part# ASD1699 AmeriBRAKES Front OE Style Severe Duty Fleet Compound Brake Pads 4 Pads 1 set, with hardware & Pin Boots, Brake Pad Sensors
1x Part# ASD2201 AmeriBRAKES Rear OE Style Severe Duty Fleet Compound Brake Pads 4 Pads 1 set, with hardware & Pin Boots, Brake Pad Sensors
1x Part# 940 Rear Parking-Emergency Brake shoe set, both sides fit inside your rear rotors.
1x Part# 7358K Rear Parking-Emergency Brake shoe spring set, both sides