Probst PZ / SZ Extractor Spring Steel Blade for either the PZ Slab Extractor or the SZ Paving Extractor. Part No. 41800001 Durable galvanized surface. Two Blades are required for the SZ Paving Extractor. Four Blades are required for the PZ Slab Extractor. Standard Delivery: 1-2 Working Days *Sold as singles*