Overview Reviews Product Description SA342 90 joist support bracket for use with 50mm Spirafix Ground Anchors, x1 through slot and x3 fixing holes. Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Spirafix SA342 - 90° Joist Support 3 Hole Bracket Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *