Anschutz 6817 8mm riser block set with strong clamping, for Anschutz grooved receiver 11mm to 13 mm.
Height: 8 mm / 0.31 inch.
Fits Anschutz 1900s, 2000s, & 54.30 series rifles and Anschutz 8000s & 9000s series air rifles.
Used the mounts to raise your 11mm European (Anschutz) front and rear sight by 8mm.