Everlast Wood Beam Holder (EA) https://www.amazon.com/dp/B00076ZE0I/ref=cm_sw_r_sms_c_api_i_feHPEbSCAWMZP
Everlast Wood Beam Holder (EA) https://www.amazon.com/dp/B00076ZE0I/ref=cm_sw_r_sms_c_api_i_feHPEbSCAWMZP
I use it for both, may be a bit of overkill for the double end.